Abstract: During the first stage, the elements of the ski structure are assembled according to an essentially rectilinear beam, including at least one thermofusible film in at least one gripping zone near either the front or back end of the structure. During the recovery stage after the first stage, this gripping zone is heated to a temperature slightly higher than the softening temperature of the thermofusible film and the heated gripping zone can be shaped in the form of a spatula and/or of the heel.

Abstract: A cross-country ski having an upwardly projecting longitudinal rib which laterally guides the shoe of the skier. For modifying its performance characteristics, the ski includes, on either side of the longitudinal rib, an auxiliary separate profile which is arranged to at least support the sole of the shoe. The separate profiles are affixed to the side surfaces of the rib.

Abstract: The ski comprises at its top part a longitudinal rib usable particularly for the lateral guiding of a shoe. In order to improve the technical qualities of the ski without substantially increasing its weight, the cross-section of the rib is comprised at least in the front part of the central area (A) where the shoe sole is bearing, of the superposition of at least two elementary sections (2,3) having each the shape of a quadrilateral and interconnected by a common side forming the lower side of the upper elementary section and the upper side of the lower elementary section of which the lower side is horizontal, the lateral sides (7,8) of the lower elementary section (3) converging upwards and being more inclined with respect to a vertical and longitudinal plane than those (5,6) of the upper elementary section (2).

Abstract: Cross country ski comprising an upper longitudinal rib having a generally vertical trapezoid cross section. The longitudinal rib has at least two superimposed layers extending to form the upper base, and two sides of the trapezoid.